Research on air entry water of hovercraft with different air bag pressures
In order to ensure the application of hovercraft in special cases,the study on air water injection of hovercraft is carried out.By using abaqus finite element analysis software to build an air spring model for the air bag of hovercraft,the motion characteristics and attitude changes of the air bag during the water entry process are simulated and analyzed.The res-ults show that:The movement of the air bag is more intense than that of the bottom plate because of the existence of the air spring.The motion characteristics of the airbag pressure are almost the same between 0.2-0.3MPa.When the air pressure of the air bag is less than 0.2MPa,the elastic potential energy of the air bag is smaller,the velocity attenuation is slower,and the draft after entering the water is deeper.When the air pressure of the air bag is within 0.15-0.3MPa,the attitude of the hover-craft entering the water changes from forward to backward.When the air pressure is 0.2MPa,the attitude of the hovercraft entering the water has little change.In general,when the air bag pressure of hovercraft is 0.2MPa,the motion characteristics of entering water is better,and the attitude changes little.
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